/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.spark.util

import scala.util.{Failure, Success, Try}

object DebuggableThreadUtils {

  /** Logs message for failure occurring during the execution of ThreadUtils.parmap. */
  def parmap[I, O](in: Seq[I], prefix: String, maxThreads: Int)(f: I => O): Seq[O] = {
    ThreadUtils.parmap(in, prefix, maxThreads) {
      i =>
        Try(f(i)) match {
          case Success(result) => result
          case Failure(exception) =>
            // scalastyle:off println
            println(s"Test failed for case: ${i.toString}: ${exception.getMessage}")
            // scalastyle:on println
            throw exception
        }
    }
  }
}
